/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package com.baiyu.netty;

import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.socket.SocketChannel;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpServerCodec;
import io.netty.handler.codec.http.websocketx.WebSocketServerProtocolHandler;
import io.netty.handler.codec.http.websocketx.extensions.compression.WebSocketServerCompressionHandler;
import io.netty.handler.stream.ChunkedWriteHandler;
import io.netty.handler.timeout.IdleStateHandler;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

@Service
@Slf4j
public class MocWebsocketInitializer extends ChannelInitializer<SocketChannel> {

    @Resource
    private MocWebSocketFrameHandler mocWebSocketFrameHandler;

    private static final String WEBSOCKET_PATH = "/ws";

    private static final int MAX_CONTENT_LENGTH = 65536*100;

    @Override
    public void initChannel(SocketChannel ch) throws Exception {
        ChannelPipeline pipeline = ch.pipeline();
        pipeline.addLast(new HttpServerCodec());
        pipeline.addLast(new HttpObjectAggregator(MAX_CONTENT_LENGTH));
        // 3. 处理大文件传输（可选，WebSocket 通常用不到，但建议保留）
        pipeline.addLast(new ChunkedWriteHandler());
        pipeline.addLast(new WebSocketServerCompressionHandler());
        pipeline.addLast(new WebSocketServerProtocolHandler(WEBSOCKET_PATH, null, true,MAX_CONTENT_LENGTH));
        pipeline.addLast(new MocWebSocketMessageDecoder());
        pipeline.addLast(mocWebSocketFrameHandler);
        pipeline.addLast(new IdleStateHandler(30, 15, 0));
    }
}
